Targus Ultra-Mini USB 2.0 4-Port Hub - ACH102US Travel light: Small, lightweight design without the weight of an AC adapter Compatible with Windows 98, 2000, Me, XP, 98SE, Vista, Windows 7 and Mac OS X ( 10.x or greater) Designed to support up to four(4) USB devices. Conveniently connects to most laptops and desktop computers with a bundled USB 2.0 cable. Using USB 2.0 this hub is capable of transferring files at a rate up to 60MB / sec